想做一个认证后下载的模块,支持断点续传功能,写好后发现在老的虚拟主机Apache+php4 跑没有问题,用迅雷下可以多线程+断点续传!可是放到IIS+php5就出错了,用IE直接下载没问题,用迅雷或者其他下载工具就不行了,不支持多线程,而且下几秒钟就失败了。求高手帮助!下面是测试代码:
<?php
$fname = 'PDF.rar';
$fp = fopen($fname,'rb');
$fsize = filesize($fname);
if (isset($_SERVER['HTTP_RANGE'])) {
list($start) = explode('-',(str_replace('bytes=', '', $_SERVER['HTTP_RANGE'])));
} else {
$start = 0;
}
header('Cache-control: public');
header("Content-Type: application/octet-stream");
header("Content-Disposition: attachment; filename=PDF.rar");
if ($start> 0) {
fseek($fp, $start);
header("HTTP/1.1 206 Partial Content");
header('Accept-Ranges: bytes');
header("Content-Length: " . ($fsize - $start));
header("Content-Range: bytes " . $start . "-" . ($fsize - 1) . "/" . $fsize);
} else {
header("Content-Length: $fsize");
header("Accept-Ranges: bytes");
}
fpassthru($fp);
?>
在测试的时候 我加入了一段记录请求 $_SERVER['HTTP_RANGE'] 和返回header Content-Range: bytes 的值,
发现如果Content-Range: bytes 不是以0开头的话,下载工具就会出错,但是一模一样的代码放到Apache+php4一点问题都没有! 郁闷死我了!
<?php
$fname = 'PDF.rar';
$fp = fopen($fname,'rb');
$fsize = filesize($fname);
if (isset($_SERVER['HTTP_RANGE'])) {
list($start) = explode('-',(str_replace('bytes=', '', $_SERVER['HTTP_RANGE'])));
} else {
$start = 0;
}
header('Cache-control: public');
header("Content-Type: application/octet-stream");
header("Content-Disposition: attachment; filename=PDF.rar");
if ($start> 0) {
fseek($fp, $start);
header("HTTP/1.1 206 Partial Content");
header('Accept-Ranges: bytes');
header("Content-Length: " . ($fsize - $start));
header("Content-Range: bytes " . $start . "-" . ($fsize - 1) . "/" . $fsize);
} else {
header("Content-Length: $fsize");
header("Accept-Ranges: bytes");
}
fpassthru($fp);
?>
在测试的时候 我加入了一段记录请求 $_SERVER['HTTP_RANGE'] 和返回header Content-Range: bytes 的值,
发现如果Content-Range: bytes 不是以0开头的话,下载工具就会出错,但是一模一样的代码放到Apache+php4一点问题都没有! 郁闷死我了!
IIS+fastcgi下改成 header("Status: 206 Partial Content"); 就没问题了可能是我的php设置cgi.rfc2616_headers为0最好吧ETag和Last-Modified也发送最后代码在几个支持断点续传的下载工具都测试没有问题。
<?php
$fname = ‘PDF.rar';
$fp = fopen($fname,'rb');
$fsize = filesize($fname);
if (isset($_SERVER['HTTP_RANGE'])) {
list($start) = explode('-',(str_replace('bytes=', '', $_SERVER['HTTP_RANGE'])));
} else {
$start = 0;
}
header("Content-Type: application/x-msdownload"); //这里用application/octet-stream在某些情况下续传会出错,没找到原因。
header("Content-Disposition: attachment; filename=PDF.rar");
header("ETag: ".md5(filemtime($fname)));
header("Last-Modified: ".gmdate("D, d M Y H:i:s", filemtime($fname))." GMT");
header('Content-transfer-encoding: binary');
if ($start> 0) {
fseek($fp, $start);
header("HTTP/1.1 206 Partial Content");
header("Status: 206 Partial Content");
header('Accept-Ranges: bytes');
header("Content-Length: " . ($fsize - $start));
header("Content-Range: bytes " . $start . "-" . ($fsize - 1) . "/" . $fsize);
} else {
header("Content-Length: $fsize");
header("Accept-Ranges: bytes");
}
fpassthru($fp);
?>